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Finding the Fourth Proportional to 344,410.53, 516,368.90 and 161,939.21

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Solution

The fourth proportional to 344,410.53, 516,368.90 and 161,939.21 is: 242,792.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,410.53 : 516,368.90 = 161,939.21 : x
  2. Step 2: Convert to fraction form
    344,410.53/516,368.90 = 161,939.21/x
  3. Step 3: Cross multiply
    344,410.53x = 516,368.90 × 161,939.21
  4. Step 4: Simplify right side
    344,410.53x = 83,620,368,343.03
  5. Step 5: Solve for x
    x = 83,620,368,343.03/344,410.53
  6. Step 6: Final answer
    x = 242,792.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.